---
product_id: 666418225
title: "A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series)"
brand: "a-tech"
price: "¥353428"
currency: JPY
in_stock: true
reviews_count: 13
category: "A Tech"
url: https://www.desertcart.jp/products/666418225-a-tech-128gb-ddr4-3200mhz-pc4-25600-ecc-rdimm-4rx4
store_origin: JP
region: Japan
---

# 3200MHz blazing speed 128GB massive capacity ECC Registered for error-free stability A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series)

**Brand:** a-tech
**Price:** ¥353428
**Availability:** ✅ In Stock

## Summary

> 🚀 Power your workstation like a boss with A-Tech’s 128GB ECC RAM!

## Quick Answers

- **What is this?** A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) by a-tech
- **How much does it cost?** ¥353428 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/666418225-a-tech-128gb-ddr4-3200mhz-pc4-25600-ecc-rdimm-4rx4)

## Best For

- a-tech enthusiasts

## Why This Product

- Trusted a-tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive 128GB Capacity:** Handle intensive workloads and multitasking like a pro with enterprise-grade memory size.
- • **Blazing 3200MHz DDR4 Speed:** Turbocharge your server and workstation performance with lightning-fast memory bandwidth.
- • **ECC Registered Reliability:** Minimize costly errors and system crashes with advanced error-correcting code technology.
- • **Quad Rank 4Rx4 Architecture:** Maximize data throughput and efficiency with cutting-edge quad rank design.
- • **Plug & Play Enterprise Compatibility:** Seamlessly upgrade select DDR4 servers and workstations with tested, guaranteed reliability.

## Overview

The A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM is a high-capacity, error-correcting memory module designed exclusively for select DDR4 servers and workstations. Featuring quad rank 4Rx4 architecture and operating at a low 1.2V voltage, it delivers blazing speed and enterprise-grade stability to boost system performance and reduce bottlenecks. Backed by a limited lifetime warranty and rigorous testing, this 288-pin DIMM is the ultimate upgrade for professionals demanding reliable, high-performance memory.

## Description

Buy A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series): Memory - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Satisfied - I upgraded the memory on my workstation, and was concerned that there might be compatibility issues with the existing memory, but it is working without any problems.
Review: Great purchase, works perfectly - Great purchase. Fast shipping, great packaging and we’ve had installed for nearly six months and they work flawlessly on our 2019 Mac Pro

## Features

- A-Tech RAM Memory compatible for select DDR4 Servers & Workstation systems only; (*WILL NOT WORK with Desktop Computers, Laptop Computers, or PCs of any kind*)
- Single 128GB RAM Module; DDR4 DIMM 288 Pin; Speeds up to 3200MHz PC4-25600 (PC4-3200AA)
- ECC Registered RDIMM; 4Rx4 (3DS 2S2Rx4) - Quad Rank x4; JEDEC DDR4 standard 1.2V
- Improves system performance, workload capacity, and reduces bottlenecks by increasing memory (RAM) resources
- Note: This memory is ECC Registered and cannot be mixed with different ECC types such as ECC Unbuffered, ECC Load Reduced, or Non-ECC Unbuffered; (Memory compatibility can vary among different system models and their installed components; please verify compatibility and follow memory channel guidelines to ensure maximum performance)
- Each A-Tech memory module is built and tested for superior performance and trusted reliability
- All A-Tech products are covered with a Limited Lifetime Warranty and are backed by our top rated support team to help guide you every step of the way

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJWQP8PT |
| Best Sellers Rank | #109 in Computer Memory |
| Brand | A-Tech |
| Color | 1 Module |
| Computer Memory Type | DDR4 SDRAM |
| Customer Reviews | 4.6 4.6 out of 5 stars (274) |
| Date First Available | September 26, 2023 |
| Item Dimensions LxWxH | 5.25 x 1.23 x 0.15 inches |
| Item Weight | 0.8 ounces |
| Item model number | AT128G1D4D3200RQ43DSN12V |
| Manufacturer | A-Tech |
| Product Dimensions | 5.25 x 1.23 x 0.15 inches |
| RAM | 128 GB DDR4 |
| Voltage | 1.2 Volts |

## Product Details

- **Brand:** A-Tech
- **Compatible Devices:** Server, Workstation
- **Computer Memory Size:** 128 GB
- **Memory Speed:** 3200 MHz
- **RAM Memory Technology:** DDR4

## Images

![A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 1](https://m.media-amazon.com/images/I/713gGIEJYpL.jpg)
![A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 2](https://m.media-amazon.com/images/I/719zJiwd6DL.jpg)
![A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 3](https://m.media-amazon.com/images/I/71kV+DRPnRL.jpg)
![A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 4](https://m.media-amazon.com/images/I/81Hyp3y2GQL.jpg)
![A-Tech 128GB DDR4 3200MHz PC4-25600 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 5](https://m.media-amazon.com/images/I/81oSFJ+9nuL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Questions & Answers

**Q: Will this work in my desktop computer?**
A: No, this memory is designed for servers and select workstations that support DDR4 ECC Registered memory only. If you’re unsure, contact our support team, we’re happy to help you find the exact memory your system needs!

**Q: What’s the difference between DDR4 and other types of memory and can I use them interchangeably?**
A: No, DDR4 memory is not compatible or interchangeable with other types such as DDR5, DDR3, and so on. Each memory type uses different slot designs, voltages, and architectures, so your system must support the memory type specifically.

**Q: Can I mix ECC Registered (ECC RDIMM) modules with other ECC types?**
A: No, you cannot mix ECC Registered with ECC Unbuffered (ECC UDIMM), Load-Reduced (LRDIMM), or Non-ECC Unbuffered (Non-ECC UDIMM) modules. All installed memory modules must be the same ECC type or your system will fail to boot.

**Q: What ECC type does my system need and which slots should I use?**
A: Refer to your system or motherboard manual for supported ECC types and correct memory channel configuration. Using the wrong type or incorrect slot population can cause boot failures or reduce system stability.

**Q: Why isn't my memory running at the advertised speed?**
A: Memory speed can drop when more DIMMs are installed per channel due to increased electrical load. This is normal and can vary based on your system’s design. Check your server’s memory population and configuration rules for optimal performance.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Satisfied
*by M***I on January 29, 2026*

I upgraded the memory on my workstation, and was concerned that there might be compatibility issues with the existing memory, but it is working without any problems.

### ⭐⭐⭐⭐⭐ Great purchase, works perfectly
*by E***E on December 4, 2025*

Great purchase. Fast shipping, great packaging and we’ve had installed for nearly six months and they work flawlessly on our 2019 Mac Pro

### ⭐⭐⭐⭐⭐ Great RAM
*by A***P on December 7, 2025*

RAM worked just as it should, glad I bought it before the crazy price stuff happened. Very pleased with my purchase, 10/10.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-12*